A group of kids is launching water balloons from a hillside with a water balloon slingshot. When the balloons are launched they start from a height of 31 m above the final position and hit the ground with a final speed of 51 m/s. Required:
a. Why does the balloon always hit the ground with the same speed regardless of the angle of launch?
b. What is the initial speed of the balloon when it leaves the slingshot?

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Explanation:

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jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.

answerscientific theory;